Closure-fastener



C. M. WILKINSON CLOSUREFASTENER.

APPLICATION FILED ocr. l3. I9I9.

1,332,479. Patented Mar. 2, 1920.

/W: W150 (7M Wilkinxm A TTORNE-YS WlTA/E 9 3 INVENTOR nivrrn CORA MAYVIILKINSON, 0F HARTFORD, CONNECTICUT.

CLOSURE-FASTENER.

Specification of Letters latent.

Patented Mar. 2, 1920.

Application filed October 18, 1919. Serial No. 330,352.

To all who/2t may concern,-

Be it known that 1, Coin IVIAY lViLKIN- son, a citizen of the UnitedStates, and a resident of Eittltfold, in the county of Hartford andState of Connecticut, have made certain new and useful Improvements inClosure-Fasteners, of which the following is a specification.

My invention relates to closure fasteners and more particularly to animproved bolt for doors, windows or the like.

An important object of my. invention is to provide an improved boltadapted to securely lock the closure such as a door or window, in closedposition, and which may be easily set to lock the door or window ajar orin slightly opened position.

Another object is to provide an improved bolt of simple and durableconstruction, easy and inexpensive to manufacture, and reliable inoperation.

Other objects and advantages reside in certain novel features ofconstruction, arrangement and combination of parts, and will becomeapparent as the description procoeds, reference being had to theaccompanying drawing forming part of this description, and in which:

Figure 1 is an elevational view of my improvement showing the samelocked in closed position;

Fig. 2 is a perspective view showing the same locked ajar;

Fig. 3 is an elevational view showing my improvement with the bolt justremoved from the casing' to release the closure.

Referring to the drawings, it will be seen my invention includes aswinging closure A, such as a door, window, or the like, and .itscooperating stationary structure B such as a door-jamb, window frame orthe like. A keeper O is secured to the stationary structure as shown inthe drawing. A bolt casing D is mounted upon the swinging closure, andhas its base plate E secured thereto.

The bolt casing D is provided with a longitudinal slot 5 therein, andextending to one end thereof, and is further provided with a lateralslot 6 communicating with the inner end of said longitudinal slot, asshown. A bolt 7 is mounted in the bolt casing, and has an operating knob8 secured thereto. The shank S of the operating knob is adapted to beengaged by the walls of the longitudinal and lateral slots to be guidedto a longitudinal and lateral movement, respectively, and to beconstrained or limited in its inward movement by the inner wall of saidlateral slot. The operating knob is so disposed on said locking bolt asto divide the same into a long looking portion 7 in a short non-lockingportion 7". 1

A chain or like flexible member 9 is secured at one end to an eye 10fastened to the stationz'iry structure and preferably to the keeperthereon, and has at its other end a swivel 11 in the form of a ringmounted on the shank 8 of the operating knob.

lVhen it is desired to lock the closure in closed position, the bolt isinserted in the bolt casing with the locking portion thereof foremost,as shown in Fig. 1, until the looking portion is engaged with thekeeper. The bolt is then rotated downwardly until the operating knobthereof engages in the lateral slot, as shown. The effect of the chainin this adjustment is to maintain the operating knob in the lateralslot, and thereby maintain the bolt in locked position. If it is desiredto lock the closure slightly open or ajar, the bolt is removed from thebolt casing as shown in Fig. 3, and turned 180 degrees or reversed, theswivel connection of the chain with the operating knob readilyaccommodating this movement, and the short or non-locking end of thebolt is inserted foremost in the bolt casing. V hen the bolt is shot tolocking position the operating knob limiting this inward motion arreststhe movement of the bolt when it has assumed the position shown in Fig.2, and in this position the non-locking portion is presented to thekeeper but of course does not engage the same. The chain, however,serves to effectively lock the door ajar or in slightly opened position.in this connection. it is to be noted that in order to release the doorfrom the locking action of the chain, it is necessary to first close thesame in order to remove the bolt from the bolt casing. This of courseprecludes the possibility of the entrance of any unauthorized person.

A device of the character described including in combination with aswinging closure, an associated stationary structure and a keepersecured to said stationary structure, a bolt casing secured to saidswinging closure and having a single and continuous slot thereinextending longitudifine a long looking portion adapted to en- 10 gagesaid keeper and a short non-locking portion adapted When presented tosaid keeper to terminate at the edge of said swinging closure, and achain secured to said keeper and having a swivel at its oppo- 15 siteend mounted on said operating knob, all as and for the purposes setforth.

CORA MAY WTLKINSON.

